I just used an older set of these and they required a power supply at both ends in order to work.
I suppose the newer versions only require power at one end instead.
Kind of wondering when that came about, and do the ones with a single power supply work as well?
Ordered a Orei set on Amazon, that only came with a single power supply, and it didn't work at all, even with a premade cable they wouldn't link (sent it back).
Any other brands you've used that worked well and didn't break the bank?
I ordered an Orei set from Walmart. It came with a power supply that has the insert for either US or overseas plugs. Problem was they didn't include the inserts. Luckily I had a whole other power supply that worked from a different extender that had died. The Orei works perfectly for me.